Allow disabling app image loading by process name

Test: build, flash, run app with special process name, see logcat + use
showmap to ensure app image is not loaded

Bug: 292210260
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:b3abf9807fab5baf44984b255dcd41ce0c76d82d)

Merged-In: If9b277e0d88b8b428afe953fea56f2209cdb990d
Change-Id: If9b277e0d88b8b428afe953fea56f2209cdb990d

1 files changed, 21 insertions, 3 deletions

diff --git a/runtime/oat_file_manager.cc b/runtime/oat_file_manager.cc
index 1413896a1c..fcfda96503 100644
--- a/runtime/oat_file_manager.cc
+++ b/runtime/oat_file_manager.cc
@@ -16,15 +16,16 @@
 
 #include "oat_file_manager.h"
 
+#include <stdlib.h>
+#include <sys/stat.h>
+
 #include <memory>
 #include <queue>
 #include <vector>
-#include <sys/stat.h>
 
 #include "android-base/file.h"
 #include "android-base/stringprintf.h"
 #include "android-base/strings.h"
-
 #include "art_field-inl.h"
 #include "base/bit_vector-inl.h"
 #include "base/file_utils.h"
@@ -69,6 +70,10 @@ static constexpr bool kEnableAppImage = true;
 // If true, we attempt to load an app image generated by the runtime.
 static const bool kEnableRuntimeAppImage = true;
 
+#if defined(__ANDROID__)
+static const char* kDisableAppImageKeyword = "_disable_art_image_";
+#endif
+
 const OatFile* OatFileManager::RegisterOatFile(std::unique_ptr<const OatFile> oat_file,
                                                bool in_memory) {
   // Use class_linker vlog to match the log for dex file registration.
@@ -171,7 +176,20 @@ std::vector<const OatFile*> OatFileManager::RegisterImageOatFiles(
 
 bool OatFileManager::ShouldLoadAppImage() const {
   Runtime* const runtime = Runtime::Current();
-  return kEnableAppImage && !runtime->IsJavaDebuggableAtInit();
+  if (!kEnableAppImage || runtime->IsJavaDebuggableAtInit()) {
+    return false;
+  }
+
+#if defined(__ANDROID__)
+  const char* process_name = getprogname();
+  // Some processes would rather take the runtime impact in the interest of memory (b/292210260)
+  if (process_name != nullptr && strstr(process_name, kDisableAppImageKeyword) != nullptr) {
+    LOG(INFO) << "Skipping app image load for " << process_name;
+    return false;
+  }
+#endif
+
+  return true;
 }
 
 std::vector<std::unique_ptr<const DexFile>> OatFileManager::OpenDexFilesFromOat(